document.write( "Question 362918: Please help me solve this problem by the elimination method. I am having a lot of trouble understanding how to solve for y after I solve for x. And I have a problem solving for x when a fraction is involved as is in this problem. \r
\n" ); document.write( "\n" ); document.write( "0.3x - 0.2y=4
\n" ); document.write( "0.4x - 0.5y=-55/17\r
\n" ); document.write( "\n" ); document.write( "I understand that the first equation will be 0.3x = 4, and the second will be 0.4x=-55/17;
\n" ); document.write( "Don't know what to do after this. I do not get the elimination method.
\n" ); document.write( "Thank you.
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Algebra.Com's Answer #258783 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
1.\"0.3x+-+0.2y=4\"
\n" ); document.write( "2.\"0.4x+-+0.5y=-55%2F17\"
\n" ); document.write( "If you don't like fractions or decimals, get rid of them by multiplying.
\n" ); document.write( "Multiply both equations by 10 to get rid of decimals.
\n" ); document.write( "1.\"3x-2y=40\"
\n" ); document.write( "2.\"4x-5y=-550%2F17\"
\n" ); document.write( "Now multiply the second equation by 17 to get rid of the fraction.
\n" ); document.write( "2.\"68x-85y=-550\"
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\n" ); document.write( "OK now you have 2 equations and you want to get rid of one variable.
\n" ); document.write( "1.\"3x-2y=40\"
\n" ); document.write( "2.\"68x-85y=-550\"
\n" ); document.write( "If you multiply the first equation by 85 and the second equation by (-2) and add them, you can eliminate \"y\" and solve for \"x\".
\n" ); document.write( "\"85%283x-2y%29%2B%28-2%29%2868x-85y%29=85%2840%29%2B%28-2%29%28-550%29\"
\n" ); document.write( "\"255x-170y-136x%2B170y=3400%2B1100\"
\n" ); document.write( "\"119x=4500\"
\n" ); document.write( "\"highlight%28x=4500%2F119%29\"
\n" ); document.write( "Now that you have \"x\", use either equation to solve for \"y\".
\n" ); document.write( "Both equations will work.
\n" ); document.write( "1.\"3x-2y=40\"
\n" ); document.write( "\"3%284500%2F119%29-2y=4760%2F119\"
\n" ); document.write( "\"13500%2F119-2y=4760%2F119\"
\n" ); document.write( "\"-2y=%284760-13500%29%2F119\"
\n" ); document.write( "\"-2y=8740%2F119\"
\n" ); document.write( "\"highlight%28y=-4370%2F119%29\"
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